Dräger Polytron 7000 Instructions For Use Manual page 84

Polytron 7000 Operation via PROFIBUS PA
Value Name
Bit 5, 4, 3, 2
0 Non-specific
1 Last Usable Value
2 Substitute
3 Initial Value
4 Sensor Conversion not
Accurate
5 Engineering Unit
Range Violation
6 Sub-normal
Value Name
Bit 5, 4, 3, 2
0 Non-specific
1 Active Block Alarm
2 Active Advisory Alarm Set if the value is good and the block has an active Alarm with a priority less
3 Active Critical Alarm
4 Unacknowledged
Block Alarm
5 Unacknowledged Advi-
sory Alarm
6 Unacknowledged Criti-
cal Alarm
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Uncertain sub-status
Description
There is no specific reason why the value is uncertain. Used for propagation.
Whatever was writing this value has stopped doing so. (This happens when an
input is disconnected by a configurer.)
Set when the value is written when the block is not Out of Service.
Set when the value of an input parameter is written while the block is Out of
Service.
Set if the value is at one of the sensor limits. The Limits define which direction
has been exceeded. Also set if the device can determine that the sensor has
reduced accuracy (e.g. degraded analyzer), in which case no imits are set.
Set if the value lies outside of the range of values defined for this parameter.
The Limits define which direction has been exceeded.
Set if a value derived from multiple values has less than the required number of
Good sources.
Good (Non-cascade) sub-status
Description
There is no specific reason why the value is good. No error or special condition
is associated with this value.
Set if the value is good and the block has an active Block Alarm.
than 8.
Set if the value is good and the block has an active Alarm with a priority greater
than or equal to 8.
Set if the value is good and the block has an unacknowledged Block Alarm.
Set if the value is good and the block has an unacknowledged Alarm with a
priority less than 8.
Set if the value is good and the block has an unacknowledged Alarm with a
priority greater than or equal to 8.